Equalizer



Feb., we 1925. 1,525,883

D. H. PELAAR EQUALIZER Fired April-19, 1924 s sheets-sheet 1 D. H. PELAAR EQUALIZER Filed April 19, 1924 3 Sheets-Sheet 2 attorney* Feb. 10. 1925.

Feb. 10. 1925.v 1,525,883

D. H. PELAAR EQUALIZER Filed April 19 1924 3v sheets-sheet MWI/55556 @Hoz neu .Patented Feb. 10, 1925.

UNITED STA TES PATENT oFEicE.

DONALD H. PELAAR, or KALAMAzoo, MICHIGAN.

QUALIZER.

Application led April 19` ',provide a device'of this nature possessing a simple and efficient construction which may be readily installed upon automobiles of various types andwhich will bc reliable in operation, comparatively inexpensive to manufacture, durable, strong, and otherwise well adapted to the purpose for which it is designed.

With the above and numerous other obl jects in view as will appeal'v as the description progresses, the invention resides in certain novel features of construction, and in the combination and arrangement of partsl as will be hereinafter more .fully described and claimed..

In the drawing:

Figure 1 is a horizontal section through an equalizer embodying my invention,

Figures 2, 3 and 4 are sections taken substantlally on the lines 2 2, 3-3 and 4--4 res ectively of Figure 1, and

igure 5 is a horizontal section through the modified form of the invention.

Referring to the drawing in detail it will beseen that 1 designates a casing `which is preferably square in formation and hav- 'ing associated therewith a cover plate 2.

A pin 4 extends centrally through the 4casing and also througlr the cover or lid plate 2 being held in place by a nut 5 or in any other suitable manner. A rotary member 6 is mounted on the pin within the casing and in' the present instance includes a hub 7 and a pair of spaced plates 8 of circular construction. Suitable roller bearings 9 are preferably provided within the hub 7 in ication. Y

orden that the rotary member may operate freely on the pin. A Washer 10 spaces the rotary member from the bottom of the casing; l

A plurality of pulleys 11 are rotatably' mounted between the plates 8 on pins 12 and 13. The pins 13 are/arranged in a circle equidistant from each other and the pins 12 1924. Serial No. 707,781.

are likewise arranged except that the circle of pins 12 would be smaller than that of pins 13 and thus rollers 11 on pins 13 extend slightly beyond the periphery of the plates 8.l An endless belt 14 is trained about the.

pulleys 11 on pins 12 and the runs of the belt extend between the rollers 11 on pins 12 and the rollers 11 on pins 13 as is illustrated to advantage in Figure 1 thus forming, in the present instance, four loops 15 which are engaged about pulleys 1G journaled in yokes I7 carried by a cable 18. These cables 18 pass about guiderollers 19 mounted inthe casing :1 and are engaged with rods 20 pass` ing through the sides o-f the casing into cylindrical housings 21 in which are disposed springs 22 engaging stops 23 ou the rods 20 and the sides of the casing.

`In the preferred embodiment of the invention as shown in Figures 1 to 4 inclusive the crank 25 is fixed by means of screws 26 to one of the plates 8 for the rotation of the' rotary member by means of a rod 27 which, of course, would lead to the brake pedalconveniently located in the automobile. It will thus be seen that when the rod 27 is pulled the rotary member is turned by the crank 25 thus causing the endless belt 14 topul] upon the cables 18 so as to move the rods 20 into the casing 1. Itis, of course,

understood that the rods 20 are connected tov the usual operating means adjacent the brake for expanding or contracting them depend- .ing upon the kind of brake used. It will thus' also be seen that an equal pressure may be imparted to all four brakes. y

i In themodification shown in Figure 5 instead of crank 25 I use a pinion-'30 keyed to the pin 4 as is also the rotary member. A rack bar` 31 meshes with the pinion 30 and is pulled in one direction by rod 27 and in the other direction by a spring 32. roller 33 and rollers 34 are mounted on thc cover plate 2 so as tohold this rack bar 31 in mesh with the pinion 30. Thus when the pinion is moved the gear is rotated and Athe rotatable member'turnedv and otherwise the device operates similar tothe other modiconstruction set forth, since the various changes in the form, material, proportions, and arrangement of parts and in the details of construction,-may be resorted to without departing from the spirit and scope of the invention as hereinafter claimed or-sacriicing any oit its advantages.

Having thus described my invention, what l claim as new is:

l. An equalizer of the class described including a rotatable member, a plurality of pulleys mounted in the rotatable member, and an endless cable trained over and aboye the pulleys so as to form loops, pulleys engaged in the loops, and means attached to the pulleys for operation of mechanisms.

2. An equalizer of the class described including a casing, a rotary member in the casing, a plurality ol pulleys mounted on thev` rotary member, an endless member intertrained about and among the pulleys so as to form a plurality of loops, pulleys 1n the loops, means attached to the pulleys for the' operation of mechanism, and means i'or rotating the rotary member.

3. An equalizer of the class described including a casing, a rotary member mounted in the casing, a plurality of pulleys mounted on the rotary member, an endless belt 'trained over and among the pulleys so as to form a plurality of loops, pulleys disposed in the loops, cables connected to the last mentioned pulley, rods connected to the cables, and passing through the casing, cylindrical housings mounted on the casing to receive the rods, springs in the housings, and stops on the rods so that said springs engage the stops and against the sides of the casing so as to normally hold the cables taut.

4. An equalizer of the class described including a casing, a rotary member mounted in the casing, a plurality of pulleys mounted on the rotary member, an endless belt trained over and among the pulleys so as to form a plurality ot loops, pulleys disposed in the loops, cables connected to the last mentioned pulley, rods connected to the cables, and passing through the casing, cylindrical housings mounted on the casing to receive the rods, springs in the housings,

Masses and stops on the rods so that said springs engage the stops and the sides of the casing, and means for rotating the rotary member.

5. An equalizer of the class described including a casing, a rotary member mounted in the casing and including a pai': of spaced plates, a plurality of pulleys arranged in a circle between the plates, a second series of pulleys arranged in a circle between the plates one of the latter being disposed between each pair of the former, the latter circle being larger than. the former circle, an endless belt trained over the first series of pulleys so as to form loops the runs et which are disposed one on each side ot each pulley of the second series, and means engaging the loops for actuating mechanisms, and means for rotating the rotary member.

6. An equalizer otl the class described including a casing, a plurality of cylindrical housings mounted on the casing, springs in the housings, rods in the housings, stops on the rods engaging the springs, said rods piercing into the casing, cables engaged on the inner ends ot said rods, yokes on said cables, pulleys journaled in said yokes, an endless belt trained oversaid pulleys, a rotary member mounted centrally within the casing, a plurality ot pulleys in the rotary member, said belt being also trained over the latter mentioned pulleys, and means for turning the rotary member thereby pulling inwardly upon the first mentioned pulleys, also the cables and the rods attached thereto for actuation of mechanisms.

7. An equalizer otl the class described including a rotatable member, an endless cable, a plurality of elements mounted on the rotatable member, said endless cable being trained over the plurality of elements to form loops, and means engaged in the loops and adapted to be attached to mechanisms for actuation thereof upon rotation et the rotatable member.

ln testimony whereof l allix my signature in presence of two witnesses.

DONALD ll'. l)iilli,"i-^i`it. Witnessesz FOSTER d. HERMAN, D. ifi/immane, 

